Answer : Harmony is when you can balance different elements together to create an overall balanced, pleasant environment. This includes matching colors, textures, and adding touches of decoration.
A good place to start assembling a harmonic design is by choosing the color scheme first and then finding furniture that fits those colors. Even if what you have in your home doesn't all match perfectly at the moment, it will as you add decorations over time. Be creative! There are tons of options for how to make a room harmonious- try out different combinations and see what works best for your personality. Remember that less is usually more when it comes to interior design so don't be afraid to stick with less clutter.